Pipe Volume Calculator

Q: How do I calculate flow rate?

Flow rate = Volume × Velocity. The calculator provides estimated flow capacity based on pipe volume and typical flow velocities.

Q: What affects pipe volume?

Pipe volume is affected by diameter/width, height (for square/rectangular), length, and wall thickness which determines internal dimensions.

Q: How do I calculate pressure loss?

Use the Darcy-Weisbach equation or Hazen-Williams formula. The calculator provides simplified pressure loss estimates based on pipe dimensions.

Q: What is the maximum flow velocity?

Typically 5-8 ft/s for water, 1,500-2,000 ft/min for air. Higher velocities can cause erosion and excessive pressure loss.

Q: How do I select pipe size?

Based on required flow rate, pressure loss requirements, and velocity limits. Larger pipes reduce pressure loss but increase material costs.

Pipe Dimensions

Pipe Type

Select pipe shape

Diameter/Width

Pipe diameter or width

Height

Pipe height (for square/rectangular)

Length

Pipe length

Wall Thickness

Pipe wall thickness

Calculation Results

Pipe Volume Calculator: Your Guide to Pipe Capacity

Need to calculate pipe volume for plumbing, irrigation, or industrial applications? Our Pipe Volume Calculator helps you determine the exact volume of liquid your pipe can hold and provides essential information for proper system design.

Understanding Pipe Volume

Pipe volume calculations are important for several reasons:

System Design: Proper pipe sizing
Flow Rate: Capacity planning
Material Costs: Accurate estimation
Pressure Loss: System efficiency
Maintenance: Volume requirements

How to Use the Pipe Volume Calculator

Select Pipe Type: Choose the pipe shape
Enter Diameter/Width: Input the pipe diameter or width
Enter Height: Input the pipe height (for square/rectangular)
Enter Length: Input the pipe length
Enter Wall Thickness: Input the pipe wall thickness
Click Calculate: Get volume and requirements

Pipe Volume Calculation Formula

Round Pipe:
Volume = π × (D/2)² × L

Square Pipe:
Volume = W × H × L

Rectangular Pipe:
Volume = W × H × L

Where:
D = Diameter
W = Width
H = Height
L = Length
π = 3.14159

Common Pipe Types and Sizes

Round Pipes:
- Schedule 40: 1/2" to 24"
- Schedule 80: 1/2" to 24"
- Standard Sizes: 1/8" to 36"
Square Pipes:
- Common Sizes: 1" to 12"
- Wall Thickness: 0.065" to 0.5"
- Applications: Structural, decorative
Rectangular Pipes:
- Common Sizes: 1"×2" to 8"×12"
- Wall Thickness: 0.065" to 0.5"
- Applications: HVAC, structural

Real-World Examples

Example 1: Standard Water Supply Pipe

Pipe Type: Round
Diameter: 2 inches
Length: 100 feet
Wall Thickness: 0.154 inches
Results:
- Internal Volume: 1.63 cubic feet
- Internal Volume: 12.2 gallons
- Flow Capacity: 20 GPM
- Pressure Loss: 2.5 PSI per 100 feet

Example 2: HVAC Duct

Pipe Type: Rectangular
Width: 12 inches
Height: 8 inches
Length: 50 feet
Wall Thickness: 0.036 inches
Results:
- Internal Volume: 33.3 cubic feet
- Air Flow Capacity: 1,200 CFM
- Pressure Loss: 0.1 inches WC
- Velocity: 1,500 FPM

Frequently Asked Questions

How do I calculate flow rate?

Flow rate = Volume × Velocity

What affects pipe volume?

Diameter, length, and wall thickness.

How do I calculate pressure loss?

Use the Darcy-Weisbach equation or Hazen-Williams formula.

What is the maximum flow velocity?

Typically 5-8 ft/s for water, 1,500-2,000 ft/min for air.

How do I select pipe size?

Based on flow rate, pressure loss, and velocity requirements.